This should play if your Web browser has WebAssembly enabled (most do). Most examples will play unless they need to load files. The first time you click Play, Csound will spend a few seconds loading, then play. You can edit this code and replay it.
<CsoundSynthesizer> <CsOptions> ; Select audio/midi flags here according to platform -odac ;;;realtime audio out ; For Non-realtime ouput leave only the line below: ; -o lpsholdp.wav -W ;;; for file output any platform ; by Stefano Cucchi 2020 </CsOptions> <CsInstruments> ; Required settings for WebAudio: sr = 48000 ksmps = 128 nchnls = 2 nchnls_i = 1 ; sr = 44100 ; ksmps = 32 ; nchnls = 2 0dbfs = 1 instr 1 kphase1 phasor 3 kmodulation oscil 0.5, 0.01, 2 kphase2 phasor 3+kmodulation kamp linseg 0, 0.2, 1, p3-0.4, 1, 0.2, 0 kfreq1 lpsholdp kphase1, cpspch(p4), 6, cpspch(p5), 10, cpspch(p6), 12 kfreq2 lpsholdp kphase2, cpspch(p4), 6, cpspch(p5), 10, cpspch(p6), 12 a1 = poscil(kamp, kfreq1, 1) a2 = poscil(kamp, kfreq2, 1) outch 1, a1 outch 2, a2 endin </CsInstruments> <CsScore> f1 0 8192 10 1 0 1 0 1 0 1 0 1 0 1 f2 0 4096 10 1 0 1 1 1 i1 0 10 6.09 6.02 7.03 e </CsScore> </CsoundSynthesizer>